<?php
go(function () {
    $a_255 = 255;
    $a_254 = 254;
    $a_253 = 253;
    $a_252 = 252;
    $a_251 = 251;
    $a_250 = 250;
    $a_249 = 249;
    $a_248 = 248;
    $a_247 = 247;
    $a_246 = 246;
    $a_245 = 245;
    $a_244 = 244;
    $a_243 = 243;
    $a_242 = 242;
    $a_241 = 241;
    $a_240 = 240;
    $a_239 = 239;
    $a_238 = 238;
    $a_237 = 237;
    $a_236 = 236;
    $a_235 = 235;
    $a_234 = 234;
    $a_233 = 233;
    $a_232 = 232;
    $a_231 = 231;
    $a_230 = 230;
    $a_229 = 229;
    $a_228 = 228;
    $a_227 = 227;
    $a_226 = 226;
    $a_225 = 225;
    $a_224 = 224;
    $a_223 = 223;
    $a_222 = 222;
    $a_221 = 221;
    $a_220 = 220;
    $a_219 = 219;
    $a_218 = 218;
    $a_217 = 217;
    $a_216 = 216;
    $a_215 = 215;
    $a_214 = 214;
    $a_213 = 213;
    $a_212 = 212;
    $a_211 = 211;
    $a_210 = 210;
    $a_209 = 209;
    $a_208 = 208;
    $a_207 = 207;
    $a_206 = 206;
    $a_205 = 205;
    $a_204 = 204;
    $a_203 = 203;
    $a_202 = 202;
    $a_201 = 201;
    $a_200 = 200;
    $a_199 = 199;
    $a_198 = 198;
    $a_197 = 197;
    $a_196 = 196;
    $a_195 = 195;
    $a_194 = 194;
    $a_193 = 193;
    $a_192 = 192;
    $a_191 = 191;
    $a_190 = 190;
    $a_189 = 189;
    $a_188 = 188;
    $a_187 = 187;
    $a_186 = 186;
    $a_185 = 185;
    $a_184 = 184;
    $a_183 = 183;
    $a_182 = 182;
    $a_181 = 181;
    $a_180 = 180;
    $a_179 = 179;
    $a_178 = 178;
    $a_177 = 177;
    $a_176 = 176;
    $a_175 = 175;
    $a_174 = 174;
    $a_173 = 173;
    $a_172 = 172;
    $a_171 = 171;
    $a_170 = 170;
    $a_169 = 169;
    $a_168 = 168;
    $a_167 = 167;
    $a_166 = 166;
    $a_165 = 165;
    $a_164 = 164;
    $a_163 = 163;
    $a_162 = 162;
    $a_161 = 161;
    $a_160 = 160;
    $a_159 = 159;
    $a_158 = 158;
    $a_157 = 157;
    $a_156 = 156;
    $a_155 = 155;
    $a_154 = 154;
    $a_153 = 153;
    $a_152 = 152;
    $a_151 = 151;
    $a_150 = 150;
    $a_149 = 149;
    $a_148 = 148;
    $a_147 = 147;
    $a_146 = 146;
    $a_145 = 145;
    $a_144 = 144;
    $a_143 = 143;
    $a_142 = 142;
    $a_141 = 141;
    $a_140 = 140;
    $a_139 = 139;
    $a_138 = 138;
    $a_137 = 137;
    $a_136 = 136;
    $a_135 = 135;
    $a_134 = 134;
    $a_133 = 133;
    $a_132 = 132;
    $a_131 = 131;
    $a_130 = 130;
    $a_129 = 129;
    $a_128 = 128;
    $a_127 = 127;
    $a_126 = 126;
    $a_125 = 125;
    $a_124 = 124;
    $a_123 = 123;
    $a_122 = 122;
    $a_121 = 121;
    $a_120 = 120;
    $a_119 = 119;
    $a_118 = 118;
    $a_117 = 117;
    $a_116 = 116;
    $a_115 = 115;
    $a_114 = 114;
    $a_113 = 113;
    $a_112 = 112;
    $a_111 = 111;
    $a_110 = 110;
    $a_109 = 109;
    $a_108 = 108;
    $a_107 = 107;
    $a_106 = 106;
    $a_105 = 105;
    $a_104 = 104;
    $a_103 = 103;
    $a_102 = 102;
    $a_101 = 101;
    $a_100 = 100;
    $a_99 = 99;
    $a_98 = 98;
    $a_97 = 97;
    $a_96 = 96;
    $a_95 = 95;
    $a_94 = 94;
    $a_93 = 93;
    $a_92 = 92;
    $a_91 = 91;
    $a_90 = 90;
    $a_89 = 89;
    $a_88 = 88;
    $a_87 = 87;
    $a_86 = 86;
    $a_85 = 85;
    $a_84 = 84;
    $a_83 = 83;
    $a_82 = 82;
    $a_81 = 81;
    $a_80 = 80;
    $a_79 = 79;
    $a_78 = 78;
    $a_77 = 77;
    $a_76 = 76;
    $a_75 = 75;
    $a_74 = 74;
    $a_73 = 73;
    $a_72 = 72;
    $a_71 = 71;
    $a_70 = 70;
    $a_69 = 69;
    $a_68 = 68;
    $a_67 = 67;
    $a_66 = 66;
    $a_65 = 65;
    $a_64 = 64;
    $a_63 = 63;
    $a_62 = 62;
    $a_61 = 61;
    $a_60 = 60;
    $a_59 = 59;
    $a_58 = 58;
    $a_57 = 57;
    $a_56 = 56;
    $a_55 = 55;
    $a_54 = 54;
    $a_53 = 53;
    $a_52 = 52;
    $a_51 = 51;
    $a_50 = 50;
    $a_49 = 49;
    $a_48 = 48;
    $a_47 = 47;
    $a_46 = 46;
    $a_45 = 45;
    $a_44 = 44;
    $a_43 = 43;
    $a_42 = 42;
    $a_41 = 41;
    $a_40 = 40;
    $a_39 = 39;
    $a_38 = 38;
    $a_37 = 37;
    $a_36 = 36;
    $a_35 = 35;
    $a_34 = 34;
    $a_33 = 33;
    $a_32 = 32;
    $a_31 = 31;
    $a_30 = 30;
    $a_29 = 29;
    $a_28 = 28;
    $a_27 = 27;
    $a_26 = 26;
    $a_25 = 25;
    $a_24 = 24;
    $a_23 = 23;
    $a_22 = 22;
    $a_21 = 21;
    $a_20 = 20;
    $a_19 = 19;
    $a_18 = 18;
    $a_17 = 17;
    $a_16 = 16;
    $a_15 = 15;
    $a_14 = 14;
    $a_13 = 13;
    $a_12 = 12;
    $a_11 = 11;
    $a_10 = 10;
    $a_9 = 9;
    $a_8 = 8;
    $a_7 = 7;
    $a_6 = 6;
    $a_5 = 5;
    $a_4 = 4;
    $a_3 = 3;
    $a_2 = 2;
    $a_1 = 1;
    $a_0 = 0;
    
    echo "before\n";
    co::sleep(0.5);
    echo "after\n";
});
echo "end\n";
    